In order to choose a pressure sensor or pressure transmitter suitable for different applications, pressure type is one of the key specifications including range, output signals, etc.
Gauge Pressure
It takes the atmospheric pressure as the reference point. Since the atmospheric pressure may vary according to different locations, a gauge pressure sensor is needed to ensure accurate pressure measurement.
Generally, a gauge pressure transducer has a vented tube connecting atmosphere pressure as a reference point to measure the media pressure.
Sealed Gauge Pressure
A sealed gauge pressure sensor uses a pre-determined pressure as a reference point. For MicroSensor pressure sensor, we use our local barometric pressure as a reference. The sealed gauge pressure transducer generally applies for high-pressure measurements where atmospheric pressure changes slightly affect the barometric pressure sensor or barometric pressure transmitter's accuracy.
Absolute Pressure
It is the absolute zero point, with perfect vacuum as the reference point. A formula shows the relationship between gauge and absolute pressure:
Absolute pressure = gauge pressure + atmospheric pressure
Differential Pressure
The pressure difference between two points or systems is known as differential pressure. Gauge is a specific differential pressure in that one pressure is always atmospheric. Differential Pressure is commonly associated with industrial processes because it is an important element used to maintain the proper pressure conditions for the effective working of the whole system. These gauges have two inlet ports (high-pressure port and low-pressure port) and each port is connected to the fluids whose pressure needs to be determined. Micro Sensor offers a series of differential pressure sensors for differential pressure measurement.
How do You Choose the Pressure Type?
The pressure measurement of liquids or gas, the pressure range is one factor of pressure type.
Pressure Range:≤ 0.02Mpa, ≥3.5MPa, 0.035MPa~3.5MPa.
Pressure Type: Gauge, Sealed Gauge, Absolute, Gauge, Absolute.
Owning to the different atmospheric pressures based on location, weather, and altitudes, the specific scenes require different pressure types. Our experienced and professional sales engineers are pleased to offer help if you are unsure which to choose.
Whether absolute pressure, gauge pressure or differential pressure, Micro Sensor provides related pressure sensors and pressure transmitters for each type of pressure.
Contact Us
Feel free to contact us with your unique requirements, quotations and suggestions are welcomed via sales@microsesor.cn or just leave us messages.
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